(a) Express cos 6 as a polynomial in cos . (b) Given z = cos +...
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(a) Express cos 6θ as a polynomial in cos θ.
(b) Given z = cos θ + j sin θ show, by expanding (z + 1/z)5(z –1/z)5 or otherwise, that
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sin 0 cos0 = 1 -(sin 100 5 sin 60 2 + 10 sin 20)
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a b cos 60j sin 60 cos j sin 06 cos 0j6 cos sin 15 cos ...View the full answer
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